Pololu - Stackable 0.100″ Female Header with Extra 0.3″ Spacer: 2x20-Pin, Straight
RPI HEADER 40: Raspberry Pi 40-pin stacking header, RM 2.54 at reichelt elektronik
40 Pin Breakaway Double Stacking Header - BC Robotics
Pololu - Stackable 0.100″ Female Header: 2x20-Pin, Straight
GPIO Stacking Header for Raspberry Pi - Extra-long 2x20 Pins
Amazon.com: 2x20-pin Extra Tall Female Stacking Header 0.1" for Raspberry Pi A+ Pi Model B+ Pi 2 Pi 3 (Pack of 2) : Electronics
Header Stackable 1x10 (2-Pack) - ProtoSupplies
2.0mm Pin Header H=2.0 Double Row Stack Plastic Straight Type
Arduino Stackable Header 16-pin 2.54 mm
Extra Tall Header Stackable 1x40 - ProtoSupplies
OSEPP Arduino Stackable Header 6 Pin 4pcs
Pololu - Stackable 0.100″ Female Header: 2x20-Pin, Straight
36-pin Stacking header - pack of 5! : ID 3366 : $5.95 : Adafruit Industries, Unique & fun DIY electronics and kits
5pc Arduino Shield Stackable Header Set, Stack Headers Kit 6 8 Pin ICSP UNO USA | eBay
Amazon.com: 2x13 Pin Stackable Female Header 0.1" for Raspberry Pi Gpio Extra Tall(Pack of 2) : Electronics
Photon Stackable Header - 12 Pin - PRT-14322 - SparkFun Electronics
